721000215

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{15601}}^1$

素因数の和:15704

約数の個数: 48

約数和(自身を含む): 1362990720

約数和(自身を除く): 641990505

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 79, 117, 195, 237, 395, 585, 711, 1027, 1185, 3081, 3555, 5135, 9243, 15405, 15601, 46215, 46803, 78005, 140409, 202813, 234015, 608439, 702045, 1014065, 1232479, 1825317, 3042195, 3697437, 6162395, 9126585, 11092311, 16022227, 18487185, 48066681, 55461555, 80111135, 144200043, 240333405, 721000215]

約数ペア:

[(1, 721000215), (3, 240333405), (5, 144200043), (9, 80111135), (13, 55461555), (15, 48066681), (39, 18487185), (45, 16022227), (65, 11092311), (79, 9126585), (117, 6162395), (195, 3697437), (237, 3042195), (395, 1825317), (585, 1232479), (711, 1014065), (1027, 702045), (1185, 608439), (3081, 234015), (3555, 202813), (5135, 140409), (9243, 78005), (15405, 46803), (15601, 46215)]